/*
 * Copyright 2008 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package blms.repository.inmemory;

import blms.domain.Identifiable;
import blms.repository.Repository;

/**
 * Simple in-memory repository of objects. This implementation may be used to
 * load and store objects either in memory. Each added object has its id updated
 * with an auto generated incremental number.
 * 
 * @see Repository
 * @see InMemoryRepository
 * 
 * @author João Arthur
 * @author Jonhnny Weslley
 * @author Thiago Emmanuel
 * @version 1.00, 21/04/2008
 * @since 1.0
 */
public class InMemoryRepositoryWithAutoIncrementId<E extends Identifiable>
		extends InMemoryRepository<E> {

	private int counter;

	/**
	 * Add the new object to this
	 * {@link InMemoryRepositoryWithAutoIncrementId repository}. The added
	 * object has its id updated with an auto generated incremental number.
	 * 
	 * @param entity
	 *            the object to be added to this
	 *            {@link InMemoryRepositoryWithAutoIncrementId repository}
	 */
	@Override
	public void add(final E entity) {
		entity.setId(generateNextId());
		super.add(entity);
	}

	private String generateNextId() {
		return Integer.toString(++counter);
	}

}
